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Date:   Wed, 30 Aug 2017 14:55:05 -0400
From:   Rik van Riel <riel@...hat.com>
To:     Kees Cook <keescook@...omium.org>, linux-kernel@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Borislav Petkov <bp@...e.de>,
        Andy Lutomirski <luto@...nel.org>,
        Mathias Krause <minipli@...glemail.com>, linux-mm@...ck.org,
        kernel-hardening@...ts.openwall.com,
        David Windsor <dave@...lcore.net>
Subject: Re: [kernel-hardening] [PATCH v2 27/30] x86: Implement
 thread_struct whitelist for hardened usercopy

On Mon, 2017-08-28 at 14:35 -0700, Kees Cook wrote:
> This whitelists the FPU register state portion of the thread_struct
> for
> copying to userspace, instead of the default entire struct.
> 
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: "H. Peter Anvin" <hpa@...or.com>
> Cc: x86@...nel.org
> Cc: Borislav Petkov <bp@...e.de>
> Cc: Andy Lutomirski <luto@...nel.org>
> Cc: Mathias Krause <minipli@...glemail.com>
> Signed-off-by: Kees Cook <keescook@...omium.org>
> ---
>  arch/x86/Kconfig                 | 1 +
>  arch/x86/include/asm/processor.h | 8 ++++++++
>  2 files changed, 9 insertions(+)
> 
Acked-by: Rik van Riel <riel@...hat.com>

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